Bronzing-machine.



A. J. FORD.

BRONZING MACHINE. APPLIOATION rILED 1mm, 1011.

1,107,773. Patented Aug. 18,'1914 5 SHEETS-SHEET 1.

l F O O @43 [o l xiii A. J. FORD.

BRONZING MACHINE.

APPLIOATION FILED Dnc. 1011.

Patented Aug'. 18, 1914.

6 SHEETS-.SHEET 2.

v A. J. FORD.

BRONZING MACHINE. APPLICATION HLBD 11111111.1911.

1,107,773, Patented Aug. 18, 1914.

5 SHEETS-SHEBT 3 c/ornecy.

A. J. FORD.

BRONZING MAGHINE.A

APPLIOATION FILED 1120.6, 1911.

1,107,773. Patented Aug.18,1914.

5 SHEETS-SHEET 4.

A.J.P0RD.Y BRONZING MACHINE'.

APPLICATION FILED DEO.6, 1911.

Patented Aug. 18,1914

5 SHEETS-SHEBT 5.

CII

UNITED STATES PATENT OFFICE.

ALBERT. J. FORD, OF NEW YORK, N. Y., ASSIGNOR TO T-IE FUCHS & LANG MANUFAC- TURING COMPANY, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Aug. 1s, 1914..

`Application tiled December 6, 1911. Serial No. 664,170.

to the surface of paper or other materials in the process of printing the saine.

In nsingbronzing mahines it is customary to first print with size or other suitable adhesive in the pattern to be bronzed and thereafterlto pass the sheets through the bronYing machine, which applies bronzing powder to the entireV face of tie sheet. The powder clings tolthe size, ant the surplus bronze is removed. by a dusting' operation tin the bronzng machine.

It has been found in practice that the paper or other material and any ink thereon from other printing operations, are frequently tacky or sticky, with the result that the bronze powder adheres not only to the parts that have been printedin size for the purpose of retaining the bronze powder, but also to other parts of the sheet, and that it is not removed from these other parts of the sheet by the dusting appliances, so that it continues to adhere to the Sheet and seriously mars the product, and is in many respects highly objectionable. This difficulty has heretofore been met by performing as a separate operation, :in a separate machine, the application to the'sheet of a drying powder, such as magnesia or talcum. This separate operation has been performed prelimif narily to the two steps of the bronzing op eration, one the printing' in size or adhesive and the other the application of bronze powder and removal of surplus bronze.

My invention aims to dispense altogether with'the separate machine for applying'the dryingpowder, and with the separate preliminary operation of applying such powder. I have discovered that if the applica` tion ofthe drying powder follows the ap,

thus removing the'stlckiness it does not impail-'the adhesiveness ofthe bronze to the size.

My invention includes in a bronzinpf machine, means for applying a drying powder` t0 a sheet after the bronzing powder has been applied thereto. More specifically my invention includes means for applying a 'drying powder after the bronze powder has been applied and the surface of the sheet has been subjected to a dusting operation, and more specifically my invention includes means for applyingla drying powder at an intermediante point of the dusting operation to be followed by a thorough final dusting of the sheet.

M y invention also includes novel and convenient means for feeding the bronze powder to the bronze applying means and includes means for withdrawing,r surplus powder fromthe chamber containing the bronzing devices and delivering it to the feeding device, whereby the bronze powder is automatically returned and dried by the presence of the drying powder.

Other features of my invention and objects and advantages thereof will appear from the following particular description of means embodying my invention.

l sl all now describe the bronzing machine illustrated in the accompanying drawings and embodying my invention, and shall thereafter point out my invention in claims.

'Figure l is a rear side elevation of the bronzing machine. Fig. 2 is a 'vertical ccntral section of the same. Fig. fl is an-en lai-ged elevation of a portion of the machine as viewed from the-right in Figs. l. and 2, and illustratesparticularly the means for applying the dryingr powder. Fig'. l is au yele. Yation to the saine. scale `as Fig. -l, of what is shown in Fig. 3 as viewed from the right, Fig. 5 is an enlarged detail in side elevation ofthe feeding mechanism. Fig. 6 is a central vertical section of the same on a plane extending longitudinallyv of the bronzing machine. Fig. 7 is partly a front elevation and partly a section of the same, with parts broken away. Fig. S is a detail in front elevation of one of the units of the intermit# `tent or stop gearing.

My invention is shown as embodied in va bronzing machine of a type familiar to those skilled, in the art, machines of this type being illustrated, for example, in the patents to Emmerich and Vonderlehr, Nos. 613,412 and 613,857. The machine includes the usual sheet carrier, consisting of a cylinder 1 provided with grippers 2. The bronze powder is applied to the'sheet by a feeding device 'hereinafter to be described, and is rubbed in and burnishedl by the usual butiing pads 4 and a burnishing roll 5, cov-' vember 7 1911. In the machine shown, the

dusting operation effected by there-ll 6 is only a preliminary dusting, after which the drying powder is applied, and then there is a .final dusting ofthe paper on both sides.

A magnesia fountain or receptacle 7 for the drying powder, located below and at the left of the cylinder 1, is open at the side of the top adjacent to the cylinder, and at the other side of thetop is provided 'with a lid S. W'ithidlthe magnesia fountain are two plush-covered rolls, an upper powderapplying roll 9 adjacent to and shown as in contact with the cylinder 1 and a lower powdersdistributing roll 10 in contact with the powder-applying roll 9 and in proximity to the transversely rounded bottom ofthe magnesia fountain.

The powder-applying roll 9 is rotated in the same direct-ion of'rota-tion as the cylinder 1 so that the adjacent or contacting'por-'- tions of the roll 9 and the cylinder 1 `move in opposite directions. As viewed in Figs. 1 and 2 of the drawings, the rotation of the powder-applying roll 9 and ofthe cylinder 1 would be counter-clockwise, and as viewed in Fig, et these rotations would beclockwise,

as is indicated in each instance by. the arrows. ,lhe powderfapplying roll 9,

In some machines this completesrolls. 23.

delivery mechanism.

At onefend the rolls 9 and 1() are geared together by spur gears 12 the lower one of which is rotated by a pinion 13 carried by the inner end of a stub shaft 14 which is rotated by a train of reducing gears .15, 1G, 17 from the large gear wheel 18 rotating with the cylinder 1.

Any suitable drying powder may be used, for examples, magnesia, t-aleum, soapstone, French chalk, powdered mica.

After the paper leaves the powder-applying roll 9 it is again dusted bya pair of dusting rolls 19, similar to the dusting roll 6, which perform a final dusting operation on the bronzed face of the sheet. Because of the fact that the tack or stickiness has been removed from the ink and the paper by the magnesia or other drying powder, as hereinbefore explained, this last dusting operation will remove all of the remaining superfluous bronze powder from the face ot' the sheet. The sheet next passes under a .felt-covered friction or `drawing roll 20,

after which it is released from the grippers 2 and is grasped by other grippers 21 carriedA by a smallerauxiliary cylinder 22 to which the paper is transferred with the re# verse side out. The exposed reverse side of the sheet is now dusted by a pair of dusting The sheet then passes under a rubberfcovered` delivery roll 211 and is finallyreleased' by the grippers 2l and lis discharged from the auxiliary cylinder 22 by the usual cords 25 forming part'of a usual The ent-ire bronzing, devices are inclosed in a casing 2G which re# tains the surplus hronzing and drying powders and from which these powders are re; moved by an exhausting@ device.

rllhe illustrated exhausting device consists of a rotary fan 27 communicating with a dclivery pipe 28, through which the air and powder which are exhausted from the casing 26 aredelivered to a collector, preferablya cyclone separator 29 of Well known construction, located above and opening into `the feeding device. This feeding device, which is` illustrated in detail in Figs. 5, 6 and 7, will now be described.

The feeding device includes two recep tacles or fountains, the distributing fountain 30, intothe top of which tl'iecollector i 3 2 intermittently actuated in timed relation drying and Monwe- With the operation iof the sheet-feeding" mechanism by the usual ratchet and pawl device operated by a cam 32 on the cylinder;

The collector iopens vceiiitral'ly into 'the dis tribut-ing fouiitain B0, and the bronze ipowder consequently tends to 'accumulate 'or pile up in the -center of the distributing fountain and in order 'that the powder may be 4fed equally along the bronze-applying roller it is desirable -to distribute the powder evenly in the `distributiiig fountain.

effect this 'even distribution, a distributing' screw 33 is provided in lthe fountain entend-` ing transversely of the machine.

The distributing screw has -a volute feed `flange 34' extending from the center outwardly and, oppositely :to the ends, whereby the 'powderrv 'as it falls into the-distributing feuirtain yis.j

fed equally in both directions and is -evenly distributed in the fountain as the screw is rotated.- p

The distributing fountain 30 has a bottom which is substantially V-.shaped or down- Wardly sloping -tovvard the center, the apex extending longitudinally of the fountain and transversely of the machine. .This bottom has an opening at oneside of the apex extending the full length of the fountain and providing communication between Vthe distributing fountain 30 and the feed foun- To control this opening, an intermittent feedv device 35'y is employed, comprising an intermittently rotated 'hollow tube having a slotted opening extending the full length of the tube and 4adapted to register in one position of rotation of -the feed tube with the o ening in the bottom `of the distributing fountain. The tube 85 4is so lo cated that its cylindrical periphery forms a closure for the communicating opening be tween the Itwo fountains, and it operates in its rotation to receive bronze powder from` the distributing chamber when theslottedu opening registers with the opening in the.:` bottom of the distributing chamber, and to; dump the powder into the feed fountain when the slotted opening is down.

The bronze-applying roll 9)2 is rotated'ini a clockwise direction as viewed in Fig. 6,

and rotates in conta'ct with a plate 3G which.

'set screw 38A screws into the casing and is arranged to bear against the other arm of To hold `the bottom of.

the leven1 and control the adjustment of the bottom of the fountain and press it toward the roll 32. To lower the ailr pressure in the feeding device, communication is provided between the distributing fountain 80 and the 4chamberthrough a passageway 3S) at the Side of' the feeding device, the passageway 'leading from the vmiddle of the distributing fountain to the chamber containing the bronzing` devices.

Rotation is imparted to the distributing sc'i'evvffSB from the large gear i8 on the cylinder shaft, through 3a train of reducing `gears comrp'iiising a gear wheel i110 ixco on Vorne 'end of thefscrew shatfft and rotated by a Apinion 41 tmoun'ted `on -a gtub shaft 42 on the side of the casing of the feeding device, and secured 'to agear wheel 43 mounted on the Vstub .shaft 42 and meshing with the gear 18.

'The intermittent feeddevice 35 is intermittently rotated from the shaft 4of the distributing screw 33 through intermittent or stop reducing gearing, which Will now be' vshown Iin detail, in Fig. 8 (see also Figs. 5 4and 7). =Each of the driven pinions 45 has alternate full-width and half-width teeth, four of each. On each side of the tooth-cn 'waging notch is a'latera'lly proj ectiiig pin or 'liig 46. Each intermittently driven pinion 45 'in lockedv position rides with two adjacent full-Width teeth -on -the )eiiphery of its 'driving wheel 44 and with tlie intermediate half-width tooth projecting along the side in the path of the Vlugs 46. As the iiitermittent driving wheel rotates, Vthe lug 46 iii advance engages the narrow tooth and rotates the intermittently driven pinion and the rear full-width tooth rolls down between the lugs 46 and into the tooth-engaging notch. The further rotation of the driving wheel carries that full-width tooth up on the periphery and the one behind it now also rests on the periphery and the intermediate `narrow tooth is in the path of the lugs 4G, `and the two full-width teeth lock the intermittently driven inion against further actuation until the at Vance lug of the driving wheel in its rotation strikes the narrow tooth iii its path. This operation is repeated once for every rotation of the intermittent driving wheel. In the illustrated machine, four of these nuits are employed. rl`he first intermittent driving wheel 44 of the train is fixed on the end of the distributing screw 33 opposite the gear wheel 40, and tho last driven pinion 45 is fixed 4on the end of the shaft of the intermittent feed device 35. It i:- apparent that a considerable reduction is thereby conveniently obtained, and that the intermittent feed device is rotated thereby in a counter-clockwise direction, as viewed in Fig. 6, and that each intermittent actuation of the intermittent feed device is 90 degrees. The parts are so arranged that the intermittent feed device in three vpositions completely closes the openingin the bottom of the distributing fountain 30, and in its fourth or filling position the rear edge of the slotted opening ismoved past the apex.

Y nism, therefore, the surplus bronze powder is returned in a dry condition to the distributing fountain ready to be immediately ic-used, and the bronze is properly distributcd and is automatically fed at regular ini tervals to the bronze-applying device without the necessity of any attention onv the part of the operator. The drying powder mingles as a very fine dust with the bronze dust inthe chamber and inthe exhaust devices and may unobjectionably escape with the air delivered from the cyclone separator. This dust is so exceedingly fine that it is difficult to determine what becomes of it. Ap-

parently to some extent it continues to mingie with'the bronze dust throughout the machine, as its drying function is noticeable throughout the machine.

Various modifications maybe made in the construction shown in the drawings' and I above particularly described within the princi'ple and scope of my invention.

I claim: v l 1. A- bronzing machine comprising a sheet carrier, means for applying bronze powderI to the sheet, and means for applying a drying powder to the sheet after the bronze powder has been applied and while the sheet is in the hronzing machine. l

2. A bronzing'inachine comprising a sheet carrier, means for applying bronze powder to the sheet, means for dusting the bi'onzed surface, and means for immediately thoreafter applying a` drying powder to t-he dusted surface while the sheet is in the bronzing machine.

B. In a bronzing maclii1ie,the combination, with a sheet carrier, bronze applying means and a chamber'containing the same, of means in the chamber for applying a drying powder to the sheet, a bronzereceptacle, an eX- liiust device adapted to withdraw air and dust from 'the chamber and deliver the bronze thus withdrawn to the bronze receptacle, and means for delivering bronze from the bronze receptacle to the bronze applyingv means.

1. In a bronzing machine, in combination with a bronze receptacle and with a sheet carrier, means for evenly distributing the bronze in the receptacle, means for feeding` bronze from the receptacle to the sheet carrier comprising intermittently operated bronze-applying means adjacent to the sheet carrier, and an` intermittent feed device" operative to feed bronze at intervals from the receptacle to the bronze-applyin means.

5. In a bronzing machine, in cem ination with a bronzeI receptacle and with a sheet carrier, a rotative screw disposed in the receptable transversely of the machine for evenly distributing the bronze in the receptacle, means for feeding bronze from the receptacle to the sheet carrier comprising bronze-applying means adjacent to the sheet carrier, and an intermittent feed device operative to feed bronze at intervals from the receptacle to the bronze-applying means.

6. 'Ina bronzing machine, in combination with a sheet carrier, a bronze distributing receptacle, means for evenly distributing the bronze in the receptacle, .bronze-applying means adjacent to the sheet carrier, and an4 intermittent feed device arranged as a closure for the receptacle and comprising a ro-' tative container adapted in one position of its rotation to receive bronze from the receptacle and iii another position of its rotation to feed the bronze vthus received to the bronze-applying means.

7. In a bronzing machine, in combination with a sheet. carrier, a bronze distributing receptacle, a rotative screw disposed in the sheet carrier, and an intermittent feed device arranged as a closure for the receptacle and comprising a rotative container adapted in one position of its rotation to receive bronze from-thc receptacle and in another position of its rotation to feed the bronze thus received to the bronze-applying means.

8. In a bronzing machine, the combination with a sheet carrier, bronze applying means and a chamber containing the same, of a bronze receptacle., an exhaust device adapted to withdraw air and dust from the chamber and deliver the bronze thus withdrawn to the bronze receptacle, means for evenly distributing the bronze in the receptacle, and an intermittent feed device arranged as a closure for the bronze receptacle and operative to feed bronze at intervals from the receptaclc'to the bronze-applying means. f

9. In a bronzing machine, the combination, with a sheet carrier, bronze-applying means and a chambercontaining the same, of means in. the chamber for applying a drying powder to the sheet, a bronze receptacle, an exhaust device adapted to withdraw air and dust from the. chamber and deliver the -bronze thus withdrawn to the bronze recep- 5 bronze at intervals from the receptacle' to tecle, means fof evenly distributing the In testimony whereof I have affixed my bronze in the receptacle, and an intermit-- signature in presence of two Witnesses. tent feed devicearranged as a closure for the ALBERT J. FORD.

'bronze receptacle and operative to feed Witnesses:

GmTRUDE D. HYAMB,

the bronze-applying means. HARRY C. LEWIS'. 

